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* [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298
@ 2024-01-18 13:52 gjl at gcc dot gnu.org
2024-01-18 13:54 ` [Bug debug/113481] [14 Regession] " gjl at gcc dot gnu.org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: gjl at gcc dot gnu.org @ 2024-01-18 13:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
Bug ID: 113481
Summary: avr: internal compiler error in decompose, at
rtl.h:2298
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: gjl at gcc dot gnu.org
Target Milestone: ---
Created attachment 57139
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57139&action=edit
C test case from gcc.target/avr/torture
I see this ICE with current compiler from master with an avr test case:
$ avr-gcc -g -O3 -std=gnu99 -mmcu=atmega128 pr109907-2.c -S
The ICE goes away when I remove the -g switch.
Target: avr
Configured with: ../../source/gcc-master/configure --target=avr --disable-nls
--with-dwarf2 --with-gnu-as --with-gnu-ld --disable-shared
--with-fixed-point=no --with-long-double=64 --enable-languages=c,c++
Thread model: single
Supported LTO compression algorithms: zlib
gcc version 14.0.1 20240118 (experimental) (GCC)
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] [14 Regession] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
@ 2024-01-18 13:54 ` gjl at gcc dot gnu.org
2024-01-18 13:58 ` gjl at gcc dot gnu.org
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: gjl at gcc dot gnu.org @ 2024-01-18 13:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
Georg-Johann Lay <gjl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|avr: internal compiler |[14 Regession] avr:
|error in decompose, at |internal compiler error in
|rtl.h:2298 |decompose, at rtl.h:2298
Target| |avr
Keywords| |ice-on-valid-code
--- Comment #1 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
The test uses __int24, so maybe the assertion gets something wrong with
PSImode.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] [14 Regession] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
2024-01-18 13:54 ` [Bug debug/113481] [14 Regession] " gjl at gcc dot gnu.org
@ 2024-01-18 13:58 ` gjl at gcc dot gnu.org
2024-01-18 14:22 ` rguenth at gcc dot gnu.org
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: gjl at gcc dot gnu.org @ 2024-01-18 13:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
--- Comment #2 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
It does not occur with avr-gcc-v13 -fchecking
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] [14 Regession] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
2024-01-18 13:54 ` [Bug debug/113481] [14 Regession] " gjl at gcc dot gnu.org
2024-01-18 13:58 ` gjl at gcc dot gnu.org
@ 2024-01-18 14:22 ` rguenth at gcc dot gnu.org
2024-01-18 18:03 ` [Bug debug/113481] " pinskia at gcc dot gnu.org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-01-18 14:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |14.0
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (2 preceding siblings ...)
2024-01-18 14:22 ` rguenth at gcc dot gnu.org
@ 2024-01-18 18:03 ` pinskia at gcc dot gnu.org
2024-01-18 18:32 ` gjl at gcc dot gnu.org
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-18 18:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[14 Regession] avr: |avr: internal compiler
|internal compiler error in |error in decompose, at
|decompose, at rtl.h:2298 |rtl.h:2298
Keywords| |ice-checking
Target Milestone|14.0 |---
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note -fchecking does not enable gcc_checking_assert checking so you will need
to configure older compilers with --enable-checking=yes to get the assert
hitting.
The assert that hits:
gcc_checking_assert (INTVAL (x.first)
== sext_hwi (INTVAL (x.first), precision)
|| (x.second == BImode && INTVAL (x.first) == 1));
What this assert is trying to make a point of is that we always sign extend
CONST_INT to HostWideInt (almost always 64bit integer) from the precision of
the mode.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (3 preceding siblings ...)
2024-01-18 18:03 ` [Bug debug/113481] " pinskia at gcc dot gnu.org
@ 2024-01-18 18:32 ` gjl at gcc dot gnu.org
2024-01-18 19:08 ` gjl at gcc dot gnu.org
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: gjl at gcc dot gnu.org @ 2024-01-18 18:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
--- Comment #4 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
What's strange is that it only occurs with -g.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (4 preceding siblings ...)
2024-01-18 18:32 ` gjl at gcc dot gnu.org
@ 2024-01-18 19:08 ` gjl at gcc dot gnu.org
2024-01-18 20:57 ` gjl at gcc dot gnu.org
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: gjl at gcc dot gnu.org @ 2024-01-18 19:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
--- Comment #5 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Here is a somewhat reduced test:
/* { dg-do run } */
/* { dg-options "-g -O2" } */
typedef __UINT8_TYPE__ uint8_t;
typedef __uint24 uint24_t;
#define BBB 23
#define INC 1
#define VAL 0xcccccc
uint8_t Afun5 (uint24_t num)
{
uint8_t b = 0;
__asm ("sbrc %T1%T2 $ subi %0,%n3"
: "+d" (b)
: "r" (num), "n" (BBB), "n" (INC));
return b;
}
uint8_t Cfun5 (uint24_t num)
{
uint8_t b = 0;
if (num & ((uint24_t) 1 << BBB))
b += INC;
return b;
}
int main (void)
{
if (Afun5 (VAL) != Cfun5 (VAL))
__builtin_abort();
return 0;
}
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (5 preceding siblings ...)
2024-01-18 19:08 ` gjl at gcc dot gnu.org
@ 2024-01-18 20:57 ` gjl at gcc dot gnu.org
2024-01-18 22:22 ` [Bug middle-end/113481] " pinskia at gcc dot gnu.org
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: gjl at gcc dot gnu.org @ 2024-01-18 20:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
--- Comment #6 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
This is as simple as it gets:
void Afun5 (__uint24 num)
{
__asm volatile ("" :: "r" (num));
}
void func (void)
{
Afun5 (0xcccccc);
}
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (6 preceding siblings ...)
2024-01-18 20:57 ` gjl at gcc dot gnu.org
@ 2024-01-18 22:22 ` pinskia at gcc dot gnu.org
2024-01-18 22:23 ` [Bug debug/113481] " pinskia at gcc dot gnu.org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-18 22:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2024-01-18
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Component|debug |middle-end
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
(gdb) p x.first
$1 = (rtx_def *) 0x7ffff7542b50
(gdb) p debug_rtx(x.first)
(const_int 13421772 [0xcccccc])
Definitely not sign extended like it should be.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (7 preceding siblings ...)
2024-01-18 22:22 ` [Bug middle-end/113481] " pinskia at gcc dot gnu.org
@ 2024-01-18 22:23 ` pinskia at gcc dot gnu.org
2024-01-18 22:30 ` pinskia at gcc dot gnu.org
2024-01-18 22:33 ` pinskia at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-18 22:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |debug
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(note 21 19 24 (var_location num (const_int -3355444 [0xffffffffffcccccc]))
NOTE_INSN_VAR_LOCATION)
It is sign extended in the RTL.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (8 preceding siblings ...)
2024-01-18 22:23 ` [Bug debug/113481] " pinskia at gcc dot gnu.org
@ 2024-01-18 22:30 ` pinskia at gcc dot gnu.org
2024-01-18 22:33 ` pinskia at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-18 22:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This fixes the ICE but I am not 100% sure it is correct:
```
diff --git a/gcc/dwarf2asm.cc b/gcc/dwarf2asm.cc
index 6c835bafbc4..7bd9c5f8bcc 100644
--- a/gcc/dwarf2asm.cc
+++ b/gcc/dwarf2asm.cc
@@ -146,11 +146,11 @@ dw2_asm_output_data (int size, unsigned HOST_WIDE_INT
value,
va_start (ap, comment);
- if (size * 8 < HOST_BITS_PER_WIDE_INT)
- value &= ~(HOST_WIDE_INT_M1U << (size * 8));
-
if (op)
{
+ if (size * 8 < HOST_BITS_PER_WIDE_INT)
+ value &= ~(HOST_WIDE_INT_M1U << (size * 8));
+
fputs (op, asm_out_file);
fprint_whex (asm_out_file, value);
}
```
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug debug/113481] avr: internal compiler error in decompose, at rtl.h:2298
2024-01-18 13:52 [Bug debug/113481] New: avr: internal compiler error in decompose, at rtl.h:2298 gjl at gcc dot gnu.org
` (9 preceding siblings ...)
2024-01-18 22:30 ` pinskia at gcc dot gnu.org
@ 2024-01-18 22:33 ` pinskia at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-18 22:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113481
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note the code in dw2_asm_output_data has been zeroing the top bits on value
since at least 2001. So I really doubt this is a new issue. It just folks are
now testing with checking enabled more it seems.
^ permalink raw reply [flat|nested] 12+ messages in thread
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2024-01-18 13:54 ` [Bug debug/113481] [14 Regession] " gjl at gcc dot gnu.org
2024-01-18 13:58 ` gjl at gcc dot gnu.org
2024-01-18 14:22 ` rguenth at gcc dot gnu.org
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2024-01-18 18:32 ` gjl at gcc dot gnu.org
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2024-01-18 22:22 ` [Bug middle-end/113481] " pinskia at gcc dot gnu.org
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